Staple Fiber Nonwoven Needle Punched GeotextileTec

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The use of geotextiles in civil engineering applications has grown up substantially

since their first usage in 1960, Geotextile are now widely applied in most of the Civil

Engineering applications. The most commonly used Nonwoven Geotextile are Needle

Punched due to their proven track record and versatility.

TechGeo nonwoven needle-punched geotextile manufactured by Techfab India

Industries is produced from specially engineered UV stabilized 100% Poly Propylene yarn

to form stable network of Staple fibers in order to ensure desired engineering properties in

the fabric.

The characteristics of a Nonwoven Geotextile are determined by type of raw material,

structure of fiber matrix and bonding method. Commonly prevalent raw materials for

Nonwoven Geotextile are Polypropylene (PP) or Polyester (PET). There are three types of

bonding mechanisms for manufacturing of Nonwoven Geotextile , Mechanical Bonding

or Needle Punching in which randomly oriented short staple fibers or continuous filament

layers (fleece) are bonded together through process of Needling; In Thermal bonding the

short fibers are bonded together through Heating Process, in Chemical bonding the

fibers are bonded together through chemical coating.

TechGeo nonwovens are produced from state of art fully automatic German Dilo plant

from the UV stabilized Crimped staple fiber produced from 100% virgin PP.

Fig 1 : (a) Staple Fiber Plant (b) Nonwoven Manufacturing line from Dilo Germany

TechGeo Nonwoven Geotextile are manufactured through process of Needle-

punching that involves forcibly entangling layers of loose staple fibres into three

dimensional structure (fig 1b) by sequentially punching and pulling out barbed

needles through the fiber matrix. TechGeo Nonwoven s are produced with UV

stabilized select Crimped staple fibers and firm interlocking bond ensured through

German Dilo machine exhibit high abrasion and CBR puncture resistance.

Fig:1b-Magnified View of Needle-punched Nonwoven

Fig: 1 a – TechGeo Nonwoven

TechGeo Needle-punched nonwovens have higher elongation due to the flexible

and non-brittle fibre junctions. Due to their superior elongation behavior TechGeo

nonwovens can accommodate soil irregularities in better way and are more resistant

to puncture and can absorb more impact energy. The compact and randomly

oriented fiber matrix provide excellent filtration characteristics and hydraulic

properties in TechGeo Nonwovens.

TechGeo NonWoven Geotextile

TechGeo NonWovens : An Overview

Area / SectorsTechGeoFunctions

Key Properties

Highway &Railways

SeparationFiltration

ReinforcementDrainage

Tensile Strength, ElongationCBR Puncture, Impact Energy

Pore Size, Permeability

River Bank &

Coastal Protection

Filtration, ErosionControl

Pore Size, Permeability, UV Resistence,

Abrasion Resistance,CBR Puncture, Impact Energy

Mass, CBR Puncture, Tensile, UV Resistence, pH Stability,

Chemical Resistence, AOS, Flow Rate, Permeability, Elongation, Cone Drop

Waste Landfills &

Ash Dikes

Protection,Filtration,Drainage

Tunnels &Waterproofing

Protection,Drainage

Mass, CBR Puncture, Tensile, UVResistance, AOS, Flow Rate,

Permeability, Cone Drop

Hydro Projects,Dams &

Reservoirs

Filtration,ProtectionDrainage

AOS, Flow Rate, Permeability,CBR Puncture, Tensile

CanalsDrainageFiltration

Pore Size, Permeability, Flow Rate,Elongation, Tensile Strength

PavementRehabilitation

SealingPolymer Melting Point, AsphaltAbsorption, Tensile Strength,

Tear Strength

Architecture &Landscaping Filtration AOS, Flow Rate, Permeability

How to select right TechGeo Grade?

l Made of 100% PP stable fiber

l High UV and Abrasion Resistence

l Stable in pH range of 2 - 13 and resistant to biological degradation

l Available in 'N' AND 'H' series from 120 to 1200 GSM

l Upto tensile strength of 75Kn/m

l 'N' Range excellent filtration behavior, 'H' range thick and robust for Protection and Separation applications

l Excellent clogging resistence

TechGeo Engineering Functions

Filtration

Separation

Drainage

Reinforcement

Protection

Sealing

Erosion Control

Applications

Why TechGeo Nonwovens?

l Excellent Mechanical and Hydraulic Properties

l Wider Product Range

l High UV and Abrasion Resistence

l Available upto 5.0m width

l ISO 9001 Certified

l State-of-art manufacturing plant having 4000 Tonne per annum capacity

l Reliability and Trust of TechFab Brand

l Technical Support from qualified Technical People

l Well proven in the field

l Approval in several Government departments

l Complete QC Test facilities in a modern lab as per ISO and ASTM

standards

Important Notice

The information contained in this brochure is general in nature and does not cover any particular site or soil conditions. This is only for guidance purposes. Users are advised to take into account the prevailing site conditions and data before specifiying a particular product. For details about the TechGeo applications pl. contact us on our contact details

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